EP1100103A2 - Circuit arrangement for operating an electromagnet - Google Patents

Circuit arrangement for operating an electromagnet Download PDF

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Publication number
EP1100103A2
EP1100103A2 EP00250371A EP00250371A EP1100103A2 EP 1100103 A2 EP1100103 A2 EP 1100103A2 EP 00250371 A EP00250371 A EP 00250371A EP 00250371 A EP00250371 A EP 00250371A EP 1100103 A2 EP1100103 A2 EP 1100103A2
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EP
European Patent Office
Prior art keywords
circuit
coil
solenoid
magnet
self
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00250371A
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German (de)
French (fr)
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EP1100103B1 (en
EP1100103A3 (en
Inventor
Ulrich Baumgaertl
Klaus Neidhardt
Wolfgang Roehl
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Siemens AG
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Siemens AG
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Publication of EP1100103A3 publication Critical patent/EP1100103A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H01H47/325—Energising current supplied by semiconductor device by switching regulator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage

Definitions

  • Magnetic coils with which a movable armature is actuated, are used in relays, disconnectors and circuit breakers at all voltage levels for direct or indirect triggering of the Switching movement of mechanical switch contacts required.
  • a certain drive energy is triggered by the armature movement and drive power and thus a certain current is required the when the anchor is pulled through then further electrical excitation of the magnetic coil can be kept should be reduced, because of holding the anchor due to the reduced magnetic in the tightened state Resistance requires less power and therefore less power becomes.
  • the invention relates to such magnetic coils their anchors after tightening with reduced holding power is held.
  • a ballast z. B. used a switching power supply that periodically interrupts the operating current in the coil circuit and thus significantly reduces the time-averaged current value and thus the holding power.
  • ballasts cannot be used when the solenoid with a monitoring circuit is provided with which this in the uncontrolled Operating case monitored for an intact condition becomes.
  • a DC voltage that is far below that which triggers Operating voltage for the magnet armature is in the switched off State of the solenoid instead of the operating voltage the coil circuit switched on.
  • Using a current measurement in the Magnetic coil circuit then becomes the resistance of the magnetic coil supervised.
  • the resistance value changes due to an error in or on the magnetic coil, for example due to a wire break or a turn short in the winding or because of a faulty connection at the coil connections, so there is a message and, if necessary, another protective measure depending on the type of use of the switching device, its solenoid is monitored.
  • ballast with its current reducing Switching means are whose current-dependent resistance in the Range of low currents in the case of monitoring relative is high, the measured current would be for the assessment of the Condition of the solenoid coil can no longer be evaluated.
  • the invention thus goes from a circuit arrangement to Operation of a working magnet consisting of a solenoid and an armature to be actuated by excitation of the solenoid having.
  • the invention has for its object an arrangement to specify a monitoring of the solenoid too in cooperation with a circuit for power reduction allowed.
  • the object is achieved in that that in the circuit of the solenoid a self-conducting electronic switch is connected to a control circuit connected to the self-conducting electronic Switch after the armature has been tightened by periodic Control in a reduced-power operation controls and that a test circuit containing the solenoid is provided to monitor the state of the solenoid.
  • the invention is based on the selection of one for Power reduction on working magnets not used Component.
  • the test circuit can Auxiliary voltage source, one in series with the auxiliary voltage source switched test resistor as well as the voltage at Have evaluation circuit detecting test resistance. On a proper condition of the solenoid can be closed if a current is determined via the test resistor Height flows and the evaluation circuit accordingly Voltage of certain height is supplied.
  • the circuit arrangement according to the invention can expediently so be designed that by means of a switch on the working magnet either an operating voltage source or the Auxiliary voltage source containing test circuit can be applied. It is therefore up to the user to carry out a desired test to be able to carry out at any time.
  • a working magnet 1, e.g. B. for a voltage or undervoltage release a low-voltage circuit breaker, has a magnetic coil 2 and a schematically indicated Anchor 3 on.
  • the solenoid 2 is operated with an operating voltage operated by an operating voltage source 4 provided by means of a rectifier bridge 5 becomes.
  • the operating voltage source 4 is in a known manner by a switching device, not shown here, e.g. B. in In the event of an undervoltage release by a voltage measuring device, only effective at a trigger time.
  • a self-conducting electronic Switch 6 in the form of a self-conducting power FET and a current measuring resistor 7.
  • the electronic Switch 6 receives control signals from a control circuit 8 in such a way that after the armature 3 has been tightened by the the control circuit 8 by evaluating the current signal from Current measuring resistor 7 is detected by giving up a Control voltage based on the self-conducting electronic Switch 6 this periodically in the high-resistance state brought. So that the performance for the hold state the magnetic coil 2 to a fraction of the attraction reduced.
  • a test circuit can be activated. This comprises an auxiliary voltage source 11 indicated as a battery and a test resistor 12 in parallel with one Evaluation circuit 13 is connected, also the rectifier bridge 5, the solenoid 2, the electronic switch 6 and the current measuring resistor 7.
  • the evaluation circuit can have a very low resistance value 13 based on that supplied by the test resistor 12 Detect voltage, whether the solenoid 2 in one in good condition. In this way, a Arrangement for magnetic coil monitoring together with the arrangement be used to reduce the holding power.
  • the self-guiding electronic switch 6 not triggered at the time of triggering must be so that there is a relief of the components results.
  • the sheet resistance is only 1 ohm or less and is therefore negligible in relation to the resistance of the magnetic coil 2 small.

Abstract

A circuit arrangement for operating a magnet (1) fitted with a coil (2) and an armature (3) actuated by excitation of the magnet coil (2). An electronic power-FET switch (6) is specifically connected into the magnet coil's electric circuit and is joined to a drive circuit (8) for driving the electronic switch (6) into power- reduced operation after resultant pull-in of the armature (3). A test-circuit containing the magnet-coil (2) is provided for monitoring the state of the magnet coil (2).

Description

Magnetspulen, mit denen ein beweglicher Anker betätigt wird, werden in Relais, Trenn- und Leistungsschaltern aller Spannungsebenen zur direkten oder indirekten Auslösung der Schaltbewegung von mechanischen Schaltkontakten benötigt. Zum Auslösen der Ankerbewegung wird eine bestimmte Antriebsenergie und Antriebsleistung und somit ein bestimmter Strom benötigt, der, wenn der Anker im angezogenen Zustand dann durch weitere elektrische Erregung der Magnetspule gehalten werden soll, reduziert werden kann, da zum Halten des Ankers aufgrund des im angezogenen Zustand verringerten magnetischen Widerstandes weniger Kraft und somit weniger Leistung benötigt wird. Die Erfindung bezieht sich auf solche Magnetspulen, deren Anker nach dem Anziehen mit reduzierter Halteleistung gehalten wird.Magnetic coils, with which a movable armature is actuated, are used in relays, disconnectors and circuit breakers at all voltage levels for direct or indirect triggering of the Switching movement of mechanical switch contacts required. To the A certain drive energy is triggered by the armature movement and drive power and thus a certain current is required the when the anchor is pulled through then further electrical excitation of the magnetic coil can be kept should be reduced, because of holding the anchor due to the reduced magnetic in the tightened state Resistance requires less power and therefore less power becomes. The invention relates to such magnetic coils their anchors after tightening with reduced holding power is held.

Zur Reduzierung der Halteleistung sind geeignete elektronische Vorschalteinrichtungen bekannt. Dabei wird der Umstand ausgenutzt, dass der Haltestrom eines guten Elektromagnetsystems nur 10% des Anzugsstromes beträgt. Durch die Leistungsbeziehung N = I2 / R ergibt sich damit eine Reduzierung der Halteleistung auf 1%. Als Vorschalteinrichtung wird z. B. ein Schaltnetzteil eingesetzt, das den Betriebsstrom im Spulenkreis periodisch unterbricht und so den zeitlich gemittelten Stromwert und damit die Halteleistung deutlich reduziert.Suitable electronic ballast devices are known for reducing the holding power. This takes advantage of the fact that the holding current of a good electromagnetic system is only 10% of the starting current. Due to the power relationship N = I 2 / R, the holding power is reduced to 1%. As a ballast z. B. used a switching power supply that periodically interrupts the operating current in the coil circuit and thus significantly reduces the time-averaged current value and thus the holding power.

Derartige Vorschalteinrichtungen können indessen dann nicht eingesetzt werden, wenn die Magnetspule mit einer Überwachungsschaltung versehen wird, mit der diese im nichtangesteuerten Betriebsfall auf einen intakten Zustand hin überwacht wird. Bei einer solchen Überwachungsschaltung wird eine Gleichspannung, die weit unter der eine Auslösung bewirkenden Betriebsspannung für den Magnetanker liegt, im ausgeschalteten Zustand der Magnetspule anstelle der Betriebsspannung auf den Spulenkreis aufgeschaltet. Mittels einer Strommessung im Magnetspulenkreis wird dann der Widerstand der Magnetspule überwacht. Ändert sich der Widerstandswert durch einen Fehler in oder an der Magnetspule, beispielsweise wegen eines Drahtbruchs oder eines Windungsschlusses in der Wicklung oder wegen einer fehlerhaften Verbindung an den Spulenanschlüssen, so erfolgt eine Meldung und ggf. eine weitere Schutzmaßnahme je nach Art des Einsatzes des Schaltgeräts, dessen Magnetspule überwacht wird. Würde im Magnetspulenkreis nun noch eine Vorschalteinrichtung mit ihren stromreduzierenden Schaltmitteln liegen, deren stromabhängiger Widerstand in dem Bereich der geringen Ströme im Fall der Überwachung relativ hoch ist, so wäre der gemessene Strom für die Beurteilung des Zustandes der Magnetspule nicht mehr auswertbar.However, such ballasts cannot be used when the solenoid with a monitoring circuit is provided with which this in the uncontrolled Operating case monitored for an intact condition becomes. With such a monitoring circuit, a DC voltage that is far below that which triggers Operating voltage for the magnet armature is in the switched off State of the solenoid instead of the operating voltage the coil circuit switched on. Using a current measurement in the Magnetic coil circuit then becomes the resistance of the magnetic coil supervised. The resistance value changes due to an error in or on the magnetic coil, for example due to a wire break or a turn short in the winding or because of a faulty connection at the coil connections, so there is a message and, if necessary, another protective measure depending on the type of use of the switching device, its solenoid is monitored. Would still be in the magnetic coil circuit a ballast with its current reducing Switching means are whose current-dependent resistance in the Range of low currents in the case of monitoring relative is high, the measured current would be for the assessment of the Condition of the solenoid coil can no longer be evaluated.

Bisher werden deshalb Magnetspulen, die mit einer Spulenüberwachung betrieben werden, nicht mit Einrichtungen zur Reduzierung der Halteleistung versehen. Vielmehr bleibt im Dauerbetrieb die volle Anzugsleistung, also etwa der 100fache Wert der nötigen Halteleistung, auch als Halteleistung angelegt. Die Magnetspulen müssen deshalb wärmetechnisch entsprechend ausgelegt werden.So far, therefore, magnetic coils with a coil monitoring operated, not with facilities for reduction of the holding power. Rather, it remains in continuous operation the full tightening power, i.e. about 100 times the value the necessary holding power, also designed as a holding power. The solenoids must therefore be thermally appropriate be interpreted.

Die Erfindung geht somit von einer Schaltungsanordnung zum Betrieb eines Arbeitsmagneten aus, der eine Magnetspule und einen durch Erregung der Magnetspule zu betätigenden Anker aufweist. Der Erfindung liegt die Aufgabe zugrunde, eine Anordnung anzugeben, die eine Überwachung der Magnetspule auch im Zusammenwirken mit einer Schaltung zur Leistungsreduzierung gestattet.The invention thus goes from a circuit arrangement to Operation of a working magnet consisting of a solenoid and an armature to be actuated by excitation of the solenoid having. The invention has for its object an arrangement to specify a monitoring of the solenoid too in cooperation with a circuit for power reduction allowed.

Erfindungsgemäß wird die gestellte Aufgabe dadurch gelöst, daß in den Stromkreis der Magnetspule ein selbstleitender elektronischer Schalter geschaltet ist, der mit einer Ansteuerschaltung verbunden ist, die den selbstleitenden elektronischen Schalter nach erfolgtem Anzug des Ankers durch periodische Ansteuerung in einen leistungsreduzierten Betrieb steuert und daß ein die Magnetspule enthaltender Prüfstromkreis zur Überwachung des Zustandes der Magnetspule vorgesehen ist.According to the invention, the object is achieved in that that in the circuit of the solenoid a self-conducting electronic switch is connected to a control circuit connected to the self-conducting electronic Switch after the armature has been tightened by periodic Control in a reduced-power operation controls and that a test circuit containing the solenoid is provided to monitor the state of the solenoid.

Die Erfindung beruht auf der Auswahl eines bisher für die Leistungsreduzierung an Arbeitsmagneten nicht eingesetzten Bauelementes. Selbstleitende elektronische Schalter haben nämlich die Eigenschaft, daß ihr Bahnwiderstand im nicht angesteuerten Zustand, d.h. im Ruhezustand, sehr gering ist. Daher kann ein Prüfstromkreis unter Einbeziehung des elektronischen Schalters geschaffen werden. Bisher benutzte elektronische Schalter sind demgegenüber im nicht angesteuerten Zustand nichtleitend und erlauben somit keine Messung der Magnetspule.The invention is based on the selection of one for Power reduction on working magnets not used Component. Have self-conducting electronic switches namely the property that their rail resistance in the uncontrolled Condition, i.e. at rest, is very low. Therefore, a test circuit involving the electronic Switch are created. Electronic used so far In contrast, switches are in the non-activated state non-conductive and therefore do not allow measurement of the magnetic coil.

Im Rahmen der Erfindung kann der Prüfstromkreis eine Hilfspannungsquelle, einen in Reihe mit der Hilfsspannungsquelle geschalteten Prüfwiderstand sowie eine die Spannung am Prüfwiderstand erfassende Auswertungsschaltung aufweisen. Auf einen ordnungsgemäßen Zustand der Magnetspule kann geschlossen werden, wenn über den Prüfwiderstand ein Strom bestimmter Höhe fließt und der Auswertungsschaltung dementsprechend eine Spannung bestimmter Höhe zugeführt wird. In the context of the invention, the test circuit can Auxiliary voltage source, one in series with the auxiliary voltage source switched test resistor as well as the voltage at Have evaluation circuit detecting test resistance. On a proper condition of the solenoid can be closed if a current is determined via the test resistor Height flows and the evaluation circuit accordingly Voltage of certain height is supplied.

Die Schaltungsanordnung nach der Erfindung kann zweckmäßig so gestaltet sein, daß mittels eines Umschalters an den Arbeitsmagnet wahlweise eine Betriebsspannungsquelle oder der die Hilfsspanungsquelle enthaltende Prüfstromkreis anlegbar ist. Der Benutzer hat es daher in der Hand, eine gewünschte Prüfung jederzeit vornehmen zu können.The circuit arrangement according to the invention can expediently so be designed that by means of a switch on the working magnet either an operating voltage source or the Auxiliary voltage source containing test circuit can be applied. It is therefore up to the user to carry out a desired test to be able to carry out at any time.

Als elektronischer Schalter mit den angegebenen Eigenschaften eignet sich im Rahmen der Erfindung insbesondere ein selbstleitender Leistungs-FET.As an electronic switch with the specified properties is particularly suitable in the context of the invention, a self-conductive Performance FET.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels näher erläutert werden. Die zugehörige Zeichnung zeigt ein Prinzipschaltbild der erfindungsgemäßen Schaltungsanordnung.The invention is intended to be explained below using an exemplary embodiment are explained in more detail. The accompanying drawing shows a schematic diagram of the circuit arrangement according to the invention.

Ein Arbeitsmagnet 1, z. B. für einen Spannungs- oder Unterspannungsauslöser eines Niederspannungs-Leistungsschalters, weist eine Magnetspule 2 und einen schematisch angedeuteten Anker 3 auf. Die Magnetspule 2 wird mit einer Betriebs-Gleichspannung betrieben, die von einer Betriebsspannungsquelle 4 mittels einer Gleichrichterbrücke 5 bereitgestellt wird. Die Betriebsspannungsquelle 4 wird in bekannter Weise durch eine hier nicht gezeigte Schalteinrichtung, z. B. im Falle eines Unterspannungsauslösers durch eine Spannungsmesseinrichtung, erst zu einem Auslösezeitpunkt wirksam. Um einen leistungsreduzierten weiteren Betrieb der Magnetspule zu ermöglichen, nachdem der Anker 3 betätigt wurde, enthält der Stromkreis der Magnetspule 2 einen selbstleitenden elektronischen Schalter 6 in der Gestalt eines selbstleitenden Leistungs-FET und einen Strommesswiderstand 7. Der elektronische Schalter 6 erhält Steuersignale von einer Ansteuerschaltung 8 in der Weise, daß nach erfolgtem Anzug des Ankers 3, die von der Ansteuerschaltung 8 durch Auswertung des Stromsignals vom Strommesswiderstand 7 erkannt wird, durch Aufgeben einer Steuerspannung auf die Basis des selbstleitenden elektronischen Schalters 6 dieser periodisch in den hochohmigen Zustand gebracht wird. Damit wird die Leistung für den Haltezustand der Magnetspule 2 auf einen Bruchteil der Anzugsleistung reduziert.A working magnet 1, e.g. B. for a voltage or undervoltage release a low-voltage circuit breaker, has a magnetic coil 2 and a schematically indicated Anchor 3 on. The solenoid 2 is operated with an operating voltage operated by an operating voltage source 4 provided by means of a rectifier bridge 5 becomes. The operating voltage source 4 is in a known manner by a switching device, not shown here, e.g. B. in In the event of an undervoltage release by a voltage measuring device, only effective at a trigger time. To one reduced operation of the solenoid enable after the anchor 3 has been actuated, contains the Circuit of the magnetic coil 2 a self-conducting electronic Switch 6 in the form of a self-conducting power FET and a current measuring resistor 7. The electronic Switch 6 receives control signals from a control circuit 8 in such a way that after the armature 3 has been tightened by the the control circuit 8 by evaluating the current signal from Current measuring resistor 7 is detected by giving up a Control voltage based on the self-conducting electronic Switch 6 this periodically in the high-resistance state brought. So that the performance for the hold state the magnetic coil 2 to a fraction of the attraction reduced.

Liegt an der Steuerelektrode (Gate) des elektronischen Schalters 6 kein Steuersignal an, so liegt neben der Gleichrichterbrücke 2 nur der selbstleitende elektronische Schalter 6 und der sehr kleine Strommeßwiderstand 7 im Stromkreis der Magnetspule 2. In diesem Zustand kann mittels eines Umschalters 10 ein Prüfstromkreis aktiviert werden. Dieser umfaßt eine als Batterie angedeutete Hilfsspannungsquelle 11 und einen Prüfwiderstand 12, parallel zu dem eine Auswertungsschaltung 13 geschaltet ist, ferner die Gleichrichterbrücke 5, die Magnetspule 2, den elektronischen Schalter 6 und den Strommeßwiderstand 7. Da nur die Magnetspule 2 einen durch ihren Zustand gegebenen variablen Widerstand und alle übrigen Elemente des Prüfstromkreise einen festen und sehr niedrigen Widerstandswert aufweisen, vermag die Auswertungsschaltung 13 anhand der vom Prüfwiderstand 12 zugeführten Spannung zu erkennen, ob sich die Magnetspule 2 in einem ordnungsgemäßen Zustand befindet. Auf diese Weise kann eine Anordnung zur Magnetspulenüberwachung gemeinsam mit der Anordnung zur Reduzierung der Halteleistung angewendet werden.Located on the control electrode (gate) of the electronic switch 6 no control signal is present, so is next to the rectifier bridge 2 only the self-conducting electronic switch 6 and the very small current measuring resistor 7 in the circuit Solenoid coil 2. In this state, using a Switch 10 a test circuit can be activated. This comprises an auxiliary voltage source 11 indicated as a battery and a test resistor 12 in parallel with one Evaluation circuit 13 is connected, also the rectifier bridge 5, the solenoid 2, the electronic switch 6 and the current measuring resistor 7. Since only the solenoid coil 2 a variable resistance given by its state and all other elements of the test circuits have a fixed and the evaluation circuit can have a very low resistance value 13 based on that supplied by the test resistor 12 Detect voltage, whether the solenoid 2 in one in good condition. In this way, a Arrangement for magnetic coil monitoring together with the arrangement be used to reduce the holding power.

Von Vorteil erweist sich außerdem, dass der selbstleitende elektronische Schalter 6 zum Auslösezeitpunkt nicht angesteuert sein muss, so dass sich eine Entlastung der Bauelemente ergibt. Der Bahnwiderstand beträgt nur 1 Ohm oder weniger und ist daher im Verhältnis zum Widerstand der Magnetspule 2 vernachlässigbar klein.It also proves advantageous that the self-guiding electronic switch 6 not triggered at the time of triggering must be so that there is a relief of the components results. The sheet resistance is only 1 ohm or less and is therefore negligible in relation to the resistance of the magnetic coil 2 small.

Claims (4)

Schaltungsanordnung zum Betrieb eines Arbeitsmagneten (1), der eine Magnetspule (2) und einen durch Erregung der Magnetspule (2) zu betätigenden Anker (3) aufweist,
dadurch gekennzeichnet, daß
in den Stromkreis der Magnetspule (2) ein selbstleitender elektronischer Schalter (6) geschaltet ist, der mit einer Ansteuerschaltung (8) verbunden ist, die den selbstleitenden elektronischen Schalter (6) nach erfolgtem Anzug des Ankers (3) durch periodische Ansteuerung in einen leistungsreduzierten Betrieb steuert und daß ein die Magnetspule (2) enthaltender Prüfstromkreis zur Überwachung des Zustandes der Magnetspule (2) vorgesehen ist.Circuit arrangement for operating a working magnet (1) which has a magnet coil (2) and an armature (3) to be actuated by excitation of the magnet coil (2),
characterized in that
a self-conducting electronic switch (6) is connected to the circuit of the magnetic coil (2) and is connected to a control circuit (8) which, after the armature (3) has been tightened, periodically activates the self-conducting electronic switch (6) into a reduced power Controls operation and that a test circuit containing the solenoid (2) is provided for monitoring the state of the solenoid (2). Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Prüfstromkreis eine Hilfspannungsquelle (11), einen in Reihe mit der Hilfsspannungsquelle (11) geschalteten Prüfwiderstand (12) sowie eine die Spannung am Prüfwiderstand (12) erfassende Auswertungsschaltung (13) umfaßt.Arrangement according to claim 1, characterized in that the test circuit is an auxiliary voltage source (11), a connected in series with the auxiliary voltage source (11) Test resistor (12) and a voltage at the test resistor (12) detecting evaluation circuit (13). Schaltungsanordnung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß
mittels eines Umschalters (10) wahlweise eine Betriebsspannungsquelle (4) oder der die Hilfsspanungsquelle (11) enthaltende Prüfstromkreis an die Magnetspule (2) des Arbeitsmagneten (1) anlegbar ist.Circuit arrangement according to claim 1 or 2,
characterized in that
by means of a switch (10), either an operating voltage source (4) or the test circuit containing the auxiliary voltage source (11) can be applied to the solenoid coil (2) of the working magnet (1). Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der selbstleitende elektronische Schalter (6) ein selbstleitender Leistungs-FET ist.Arrangement according to claim 1 or 2, characterized in that the self-conducting electronic switch (6) is self-conducting power FET.
EP00250371A 1999-11-12 2000-11-09 Circuit arrangement for operating an electromagnet Expired - Lifetime EP1100103B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19956127A DE19956127A1 (en) 1999-11-12 1999-11-12 Circuit arrangement for operating a working magnet
DE19956127 1999-11-12

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Publication Number Publication Date
EP1100103A2 true EP1100103A2 (en) 2001-05-16
EP1100103A3 EP1100103A3 (en) 2002-04-03
EP1100103B1 EP1100103B1 (en) 2004-04-21

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CN107918427A (en) * 2016-10-11 2018-04-17 西门子公司 Coil with electronics controls the contactor of system
EP3309811A1 (en) * 2016-10-11 2018-04-18 Siemens Aktiengesellschaft Contactor with electronic coil control
CN107918427B (en) * 2016-10-11 2020-04-28 西门子公司 Contactor with electronic coil control system
US10692675B2 (en) 2016-10-11 2020-06-23 Siemens Aktiengesellschaft Contactor having electronic coil control

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Publication number Publication date
EP1100103B1 (en) 2004-04-21
DE19956127A1 (en) 2001-05-17
EP1100103A3 (en) 2002-04-03
DE50006138D1 (en) 2004-05-27

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